Column disambiguation in closure table queries (#252) (#284)

Co-authored-by: Julien Tardot <julien.tardot@gmail.com>

Merge pull request #257 from penerbangkode/master

feat: add parent_id column to fillable at construct

Merge pull request #265 from franzose/6.x

fix: implement a number of fixes

Merge pull request #240 from franzose/6.x

Fixed #238

Merge pull request #237 from franzose/6.x

The "parent" relationship and minor tweaks

Merge pull request #232 from franzose/6.x

fixed #231 regression by utilizing relation methods as it was in ClosureTable 5

Merge pull request #229 from franzose/6.x

6.x

Merge pull request #210 from gulch/master

use full path to facade DB instead alias

Merge pull request #197 from dcanaud/master

Change fire to handle to make it compatible with laravel 5.5

Merge pull request #194 from sh-ogawa/#193

changed: #193